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v 'J. 'W'.[ D. FIPIELD. "GRIMPING MACHINE FOR BOOTS OR SHOES. o. 261,917. Patented Aug. 1, 1882" N. PETERS, Phommlu n hen wahin iau. 11C.

UNITED STATES PATENT OFFICE.

JOHN W. D. FIFIELD, OF NORTH BROOKFIELD, MASSACHUSETTS, ASSIGNOR TO THE STODDARD ORIMPING MACHINE COMPANY.

CRllVlPlNG-MACHINE FOR BOOTS OR SHOES.

SPECIFICATION forming part of Letters Patent No. 261,917, dated August 1, 1882. Application filed June 8, 1882. (No model.)

To all whom it may concern:

Be it known that I, JOHN W. D. FIEIELD, of North Brook field, coun ty of Worcester, State of Massachusetts, have invented an Improve.

5 ment in Upper-Crimping Machines for Boots or Shoes, of which the following description, in connection with the accompanying drawings, is a specification.

My invention consists essentially inan organized crimping-machine in which the forms,

connected at each end andmoved by two fiext" ble or chain-like 'carriersfare passed one after the other between crimping-jaws supported in a yielding manner, so asto adapt themselves I to variations in thickness of the stock.

Figure 1 represents in side elevation a crimping-machine embodyingmy invention, and Fig. 2 a vertical section thereof on the dotted line a; m.

The frame-work A has suitable brackets or bearings to sustain the 'shafts B U of the sprocket wheels or drums D D which receive about them the form-carriers E, (herein shown as two parallel open-linked chains,) having 2 5 metal plates G, which are suitably attached to the crimping-forms .F,, as would be the case were the forms connected with the chain only at one end and extended radially from the axis of shaft B; and I do not therefore broadly 0 claim an endless chain or, belt at but one end of the form, as I know that to be old. In my invention the edges of the forms are parallel with the shafts B 0, having the wheels over which the carriers E are passed, screws 2 being 5 shown in the drawings for that purpose.

The shaft 0 has upon it a gear, H, which is engaged to drive the said shaft and the two chains or carriers E by the pinion H on the shaft H having on it any usual belt pulley or 40 pulleys, H.

The sprocket-wheels D D are shown as provided with two flat faces (see Fig. 2) at opposite sides to permit the passage about the said wheels of the plates G and forms, the distance from center to center of the plates G deterthrough an adjustable tubular nut, 0, held in a rigid part of the machine, and then through a spiral or other spring, d, interposed between the end of the not 0 and thejaw, so that the jaw may yield more or less, according to the adjustment of the nut e. The inward movementof the jaws toward each other is regulated by the thumbnuts f. The cross-pieces p p serve to sustain thejaws a b.

The forms may be of any usual shape, and, being connected with the carriers at each end, are moved positively and uniformly and cannot tip. 7

The carriers are moved continuously in one direction, and after passing below the lowermost pair of jaws the crimped upper may be removed in any usual Way.

I claiu1- In a crimping-machine, the two carriers E and aseries of crimping-formsconnected therewith at each end,and sprocket wheels or drums to move the carriers and forms,combined with crimping-jaws to operate substantially as described, the edges of the said forms being arranged parallel with the shafts of the wheels which support the said carriers.

In testimony whereof Ihavc signed my-name to this specification in the presence of two subscribing witnesses.

JOHN W. D. FIFIELD.

Witnesses:

W. H. HOLT, FRANK WARE. 

